登録情報 データベース : EMDB / ID : EMD-35543 ダウンロードとリンクタイトル Cryo-EM structure of PI3Kalpha in complex with compound 16 マップデータ 詳細 試料複合体 : Human PI3Kalpha in complex with compound 16タンパク質・ペプチド : Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoformタンパク質・ペプチド : Phosphatidylinositol 3-kinase regulatory subunit alphaリガンド : N-[(2S)-1-(ethylamino)-1-oxidanylidene-3-[4-(2-quinoxalin-6-ylethynyl)phenyl]propan-2-yl]-2,3-dimethyl-quinoxaline-6-carboxamideリガンド : water 詳細 キーワード Phosphoinositide 3-kinase / drug target / ligand / binding pocket / chemical scaffold / STRUCTURAL PROTEIN機能・相同性 機能・相同性情報分子機能 ドメイン・相同性 構成要素
perinuclear endoplasmic reticulum membrane / regulation of toll-like receptor 4 signaling pathway / response to muscle inactivity / phosphatidylinositol kinase activity / negative regulation of actin filament depolymerization / regulation of actin filament organization / response to L-leucine / positive regulation of focal adhesion disassembly / response to butyrate / phosphatidylinositol 3-kinase activator activity ... perinuclear endoplasmic reticulum membrane / regulation of toll-like receptor 4 signaling pathway / response to muscle inactivity / phosphatidylinositol kinase activity / negative regulation of actin filament depolymerization / regulation of actin filament organization / response to L-leucine / positive regulation of focal adhesion disassembly / response to butyrate / phosphatidylinositol 3-kinase activator activity / 1-phosphatidylinositol-3-kinase regulator activity / positive regulation of endoplasmic reticulum unfolded protein response / phosphatidylinositol 3-kinase regulator activity / IRS-mediated signalling / interleukin-18-mediated signaling pathway / T follicular helper cell differentiation / autosome genomic imprinting / phosphatidylinositol 3-kinase complex / myeloid leukocyte migration / PI3K events in ERBB4 signaling / cellular response to hydrostatic pressure / phosphatidylinositol 3-kinase regulatory subunit binding / regulation of cellular respiration / neurotrophin TRKA receptor binding / Activated NTRK2 signals through PI3K / cis-Golgi network / ErbB-3 class receptor binding / negative regulation of fibroblast apoptotic process / Activated NTRK3 signals through PI3K / transmembrane receptor protein tyrosine kinase adaptor activity / phosphatidylinositol 3-kinase complex, class IB / positive regulation of protein localization to membrane / vasculature development / 1-phosphatidylinositol-4-phosphate 3-kinase activity / Signaling by cytosolic FGFR1 fusion mutants / Co-stimulation by ICOS / RHOD GTPase cycle / cardiac muscle cell contraction / RHOF GTPase cycle / phosphatidylinositol 3-kinase complex, class IA / kinase activator activity / Nephrin family interactions / anoikis / Signaling by LTK in cancer / phosphatidylinositol-3-phosphate biosynthetic process / positive regulation of leukocyte migration / relaxation of cardiac muscle / Signaling by LTK / MET activates PI3K/AKT signaling / PI3K/AKT activation / negative regulation of stress fiber assembly / 1-phosphatidylinositol-4,5-bisphosphate 3-kinase activity / RND1 GTPase cycle / positive regulation of filopodium assembly / phosphatidylinositol-4,5-bisphosphate 3-kinase / RND2 GTPase cycle / vascular endothelial growth factor signaling pathway / RND3 GTPase cycle / phosphatidylinositol 3-kinase / insulin binding / growth hormone receptor signaling pathway / 1-phosphatidylinositol-3-kinase activity / Signaling by ALK / RHOB GTPase cycle / RHOV GTPase cycle / PI-3K cascade:FGFR3 / natural killer cell mediated cytotoxicity / Erythropoietin activates Phosphoinositide-3-kinase (PI3K) / GP1b-IX-V activation signalling / negative regulation of macroautophagy / PI-3K cascade:FGFR2 / phosphatidylinositol-mediated signaling / PI-3K cascade:FGFR4 / response to dexamethasone / PI-3K cascade:FGFR1 / RHOC GTPase cycle / RHOJ GTPase cycle / intracellular glucose homeostasis / negative regulation of osteoclast differentiation / phosphatidylinositol phosphate biosynthetic process / Synthesis of PIPs at the plasma membrane / RHOU GTPase cycle / CDC42 GTPase cycle / negative regulation of anoikis / RET signaling / PI3K events in ERBB2 signaling / insulin receptor substrate binding / Interleukin-3, Interleukin-5 and GM-CSF signaling / PI3K Cascade / T cell differentiation / protein kinase activator activity / RHOG GTPase cycle / intercalated disc / extrinsic apoptotic signaling pathway via death domain receptors / regulation of multicellular organism growth / negative regulation of cell-matrix adhesion / RHOA GTPase cycle / CD28 dependent PI3K/Akt signaling / positive regulation of TOR signaling / Role of LAT2/NTAL/LAB on calcium mobilization 類似検索 - 分子機能 PI3Kalpha, catalytic domain / Phosphatidylinositol 3-kinase regulatory subunit alpha, SH3 domain / PIK3R1, inter-SH2 domain / PI3K p85 subunit, C-terminal SH2 domain / PI3K regulatory subunit p85-related , inter-SH2 domain / PI3K p85 subunit, N-terminal SH2 domain / Phosphatidylinositol 3-kinase regulatory subunit P85 inter-SH2 domain / PI3-kinase family, p85-binding domain / PI3-kinase family, p85-binding domain / Rho GTPase-activating protein domain ... PI3Kalpha, catalytic domain / Phosphatidylinositol 3-kinase regulatory subunit alpha, SH3 domain / PIK3R1, inter-SH2 domain / PI3K p85 subunit, C-terminal SH2 domain / PI3K regulatory subunit p85-related , inter-SH2 domain / PI3K p85 subunit, N-terminal SH2 domain / Phosphatidylinositol 3-kinase regulatory subunit P85 inter-SH2 domain / PI3-kinase family, p85-binding domain / PI3-kinase family, p85-binding domain / Rho GTPase-activating protein domain / RhoGAP domain / Rho GTPase-activating proteins domain profile. / GTPase-activator protein for Rho-like GTPases / Phosphatidylinositol 3-kinase, adaptor-binding domain / Phosphatidylinositol 3-kinase adaptor-binding (PI3K ABD) domain profile. / PI3-kinase family, Ras-binding domain / Phosphatidylinositol 3-kinase Ras-binding (PI3K RBD) domain / PI3-kinase family, ras-binding domain / Phosphatidylinositol 3-kinase Ras-binding (PI3K RBD) domain profile. / Rho GTPase activation protein / C2 phosphatidylinositol 3-kinase-type domain / Phosphoinositide 3-kinase C2 / C2 phosphatidylinositol 3-kinase (PI3K)-type domain profile. / Phosphoinositide 3-kinase, region postulated to contain C2 domain / Phosphoinositide 3-kinase family, accessory domain (PIK domain) / Phosphoinositide 3-kinase family, accessory domain (PIK domain) / Phosphoinositide 3-kinase, accessory (PIK) domain superfamily / Phosphoinositide 3-kinase, accessory (PIK) domain / Phosphatidylinositol kinase / PIK helical domain profile. / Phosphatidylinositol 3- and 4-kinases signature 1. / Phosphatidylinositol 3/4-kinase, conserved site / Phosphatidylinositol 3- and 4-kinases signature 2. / Phosphatidylinositol 3-/4-kinase, catalytic domain superfamily / Phosphoinositide 3-kinase, catalytic domain / Phosphatidylinositol 3- and 4-kinase / Phosphatidylinositol 3- and 4-kinases catalytic domain profile. / Phosphatidylinositol 3-/4-kinase, catalytic domain / C2 domain superfamily / SH2 domain / Src homology 2 (SH2) domain profile. / Src homology 2 domains / SH2 domain / Src homology 3 domains / SH2 domain superfamily / SH3-like domain superfamily / Src homology 3 (SH3) domain profile. / SH3 domain / Armadillo-type fold / Ubiquitin-like domain superfamily / Protein kinase-like domain superfamily 類似検索 - ドメイン・相同性 Phosphatidylinositol 3-kinase regulatory subunit alpha / Phosphatidylinositol 4,5-bisphosphate 3-kinase catalytic subunit alpha isoform 類似検索 - 構成要素生物種 Homo sapiens (ヒト)手法 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度 : 3.05 Å 詳細 データ登録者Zhou Q / Liu X / Neri D / Li W / Favalli N / Bassi G / Yang S / Yang D / Vogt PK / Wang M-W 資金援助 中国, 米国, 11件 詳細 詳細を隠すOrganization Grant number 国 National Natural Science Foundation of China (NSFC) 81872915 中国 National Natural Science Foundation of China (NSFC) 82121005 中国 National Natural Science Foundation of China (NSFC) 81973373 中国 National Natural Science Foundation of China (NSFC) 21704064 中国 Other government 2018ZX09735-001 Other government 2018ZX09711002-002-005 Other government 2021ZD0203400 Other government 2018YFA0507000 Other government ZDKJ2021028 Other government NNCAS-2017-1-CC National Institutes of Health/Eunice Kennedy Shriver National Institute of Child Health & Human Development (NIH/NICHD) R35 CA197582 米国
引用ジャーナル : Proc Natl Acad Sci U S A / 年 : 2023タイトル : Structural insights into the interaction of three Y-shaped ligands with PI3Kα.著者 : Qingtong Zhou / Xiao Liu / Dario Neri / Wenxin Li / Nicholas Favalli / Gabriele Bassi / Su Yang / Dehua Yang / Peter K Vogt / Ming-Wei Wang / 要旨 : Class IA phosphoinositide 3-kinase alpha (PI3Kα) is an important drug target because it is one of the most frequently mutated proteins in human cancers. However, small molecule inhibitors currently ... Class IA phosphoinositide 3-kinase alpha (PI3Kα) is an important drug target because it is one of the most frequently mutated proteins in human cancers. However, small molecule inhibitors currently on the market or under development have safety concerns due to a lack of selectivity. Therefore, other chemical scaffolds or unique mechanisms of catalytic kinase inhibition are needed. Here, we report the cryo-electron microscopy structures of wild-type PI3Kα, the dimer of p110α and p85α, in complex with three Y-shaped ligands [cpd16 (compound 16), cpd17 (compound 17), and cpd18 (compound 18)] of different affinities and no inhibitory effect on the kinase activity. Unlike ATP-competitive inhibitors, cpd17 adopts a Y-shaped conformation with one arm inserted into a binding pocket formed by R770 and W780 and the other arm lodged in the ATP-binding pocket at an angle that is different from that of the ATP phosphate tail. Such a special interaction induces a conformation of PI3Kα resembling that of the unliganded protein. These observations were confirmed with two isomers (cpd16 and cpd18). Further analysis of these Y-shaped ligands revealed the structural basis of differential binding affinities caused by stereo- or regiochemical modifications. Our results may offer a different direction toward the design of therapeutic agents against PI3Kα. 履歴 登録 2023年3月4日 - ヘッダ(付随情報) 公開 2023年8月30日 - マップ公開 2023年8月30日 - 更新 2023年8月30日 - 現状 2023年8月30日 処理サイト : PDBc / 状態 : 公開
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